[PATCHv7 4/4] mfd: sec-core: Prepare regulators for suspend state to reduce power-consumption

[Chanwoo Choi]

This patch use regulator_suspend_prepare() function to prepare the proper state
of regulators for suspend state to remove un-necessary leakage power-consumption.

Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
---
 drivers/mfd/sec-core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
index 2621328..f6469b7 100644
--- a/drivers/mfd/sec-core.c
+++ b/drivers/mfd/sec-core.c
@@ -31,6 +31,7 @@
 #include <linux/mfd/samsung/s2mpu02.h>
 #include <linux/mfd/samsung/s5m8763.h>
 #include <linux/mfd/samsung/s5m8767.h>
+#include <linux/regulator/machine.h>
 #include <linux/regmap.h>
 
 static const struct mfd_cell s5m8751_devs[] = {
@@ -430,6 +431,13 @@ static int sec_pmic_suspend(struct device *dev)
 	 */
 	disable_irq(sec_pmic->irq);
 
+	switch (sec_pmic->device_type) {
+	case S2MPS14X:
+	case S2MPU02:
+		regulator_suspend_prepare(PM_SUSPEND_MEM);
+		break;
+	};
+
 	return 0;
 }
 
-- 
1.8.0

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